556428354820 has 24 divisors (see below), whose sum is σ = 1258384126104. Its totient is φ = 205450469376.

The previous prime is 556428354817. The next prime is 556428354869. The reversal of 556428354820 is 28453824655.

It can be written as a sum of positive squares in 4 ways, for example, as 30907749636 + 525520605184 = 175806^2 + 724928^2 .

It is a super-2 number, since 2×556428354820² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1070054269 + ... + 1070054788.

It is an arithmetic number, because the mean of its divisors is an integer number (52432671921).

Almost surely, 2^556428354820 is an apocalyptic number.

It is an amenable number.

556428354820 is an abundant number, since it is smaller than the sum of its proper divisors (701955771284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

556428354820 is a wasteful number, since it uses less digits than its factorization.

556428354820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140109079 (or 2140109077 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 52.

The spelling of 556428354820 in words is "five hundred fifty-six billion, four hundred twenty-eight million, three hundred fifty-four thousand, eight hundred twenty".